[REBOL] Re: Puzzle with FIND and SELECT
From: lmecir:mbox:vol:cz at: 7-Feb-2003 15:02
Hi,
----- Original Message -----
From: "Joel Neely"
> Here's a console transcript, unedited except for the blank line I've
> inserted between consecutive expressions/results for readability:
>
> >> numbers
> == [1 2 3 4 5]
>
> >> find numbers 3
> == none
>
> >> select numbers 3
> == none
>
> >> foreach num numbers [print [num tab num = 3]]
> 1 false
> 2 false
> 3 true
> 4 false
> 5 false
>
> >> foreach num numbers [print [num tab same? num 3]]
> 1 false
> 2 false
> 3 true
> 4 false
> 5 false
>
I bet that you didn't mean the "solution" below, which looks like the most
trivial answer:
context [
i: 0
nbrs: [
[1 2 3 4 5]
[1 2 3 4 5]
[]
[]
]
set 'numbers does [first skip nbrs i: i + 1 // 4]
]
